Global map layers Additional global data sets such as Hydrology data (Hydrosheds), new and updated Landcover data (Globcover), demographic data and others will be added to the WebGIS. Add dynamic WMS layer A new tool is in development that will allow users to add any WMS layer of interest into the ORNL DAAC’s WebGIS WMS options for the dynamically added layer can be set through menu driven interface. Improved WCS Interface Currently the ORNL DAAC WebGIS offers limited data sets for download through WCS. This interface will be enhanced to include more data sets and additional options for output such as projection type, resolution, format etc. Data Analysis Although data visualization is a significant part of the ORNL DAAC WebGIS, tools will be added to enable new analysis and manipulation of data. For example, users can select a box on the map and get a histogram plot of land cover classes in the region selected. Save Map Instance This new feature will provide the capability to bookmark and save map sessions, enabling users to easily focus on their area of interest and to share map sessions with colleagues. User Services Office Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) Telephone: +1 (865) WebGIS is an Internet based technology that enables users to browse, query, and download spatial data using a standard web browser. It is an effective tool to disseminate different types of geospatial data to users through a web environment. The ORNL DAAC’s WebGIS system enables users to visualize data sets relevant to biogeochemical dynamics and create custom data sets to meet their individual disciplinary needs. The ORNL DAAC’s WebGIS is based primarily on ESRI’s ArcIMS and ArcSDE technologies. Open Source technologies such as the Minnesota Mapserver, and Geospatial Data Abstraction Library (GDAL) are also incorporated. Users can perform basic GIS operations from within a web environment to create and download custom regional data sets relevant to their individual research needs. ORNL DAAC’s WebGIS provides user access to a number of landcover, biophysical, elevation, geopolitical and Open Geospatial Consortium (OGC) layers. Region specific data sets such as the North American Carbon Program (NACP) data sets and global coverage data sets are distributed through the WebGIS. The ORNL DAAC’s WebGIS also provides visualization and download of MODIS land product subsets for selected field sites. OGC standards such as Web Map Service (WMS) and Web Coverage Service (WCS) are supported within the ORNL DAAC’s WebGIS. Background Tools and Features The Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC) archives and distributes terrestrial biogeochemical dynamics data collected as part of the NASA's Earth Observing System (EOS) Program. Field Sites MODIS Validation Sites FLUXNET Sites Elevation Elevation (GTOPO30) Elevation (SRTM30) Land Water Layers MODIS Land Water Mask SRTM Water Bodies Landcover MODIS Landcover AVHRR Landcover FIA-Forest Type Groups MODIS Vegetation Continuous fields Soils FAO Soil Type Mid-latitude Soil Type ORNL DAAC Contact Information Data Sets Ecoregions LRR (Land Resource Regions) Ecoregions of North America Bailey Ecoregions Mid-Continent Intensive (MCI) from the North American Carbon Program MCI Boundary MCI AmeriFlux Sites MCI Alternate Tall Towers MCI Planned Tall Towers MCI USDA FLUXNET Sites MCI SRTM Water Bodies Open Geospatial Consortium (OGC) layers USGS National Elevation Microsoft Terraserver USGS topographic map, Digital Ortho- Quadrangle, Urban Areas USFWS National Wetlands Inventory The ORNL DAAC WebGIS includes a number of land cover, biophysical, elevation, and geopolitical layers, as well as access to other relevant Open Geospatial Consortium (OGC) layers, including: What's coming Related Webpage Links ORNL DAAC - MAST-DC - OGC - MapServer - ESRI ARCIMS - ww.esri.com/arcims ORNL DAAC WebGIS Query Attributes Users can select a region of interest and obtain attribute information for features inside the selected region. Perform Select GIS Operations Users can draw buffer zones, perform feature queries and feature selections. Example below shows an 800 km buffer, drawn around selected FLUXNET sites: Link to External Data Download Data Users can select a region of interest and download raster data through an OGC compliant Web Coverage Service (WCS) client. Vector features can also similarly extracted using tools from ArcIMS. GIS Software Get Elevation OGC Web Map Service (WMS) WMS provides the capability to combine data from remote sources and serve it seamlessly as a single service. Print Map Layout Filter pixel values Attributes Region of Interest Layer organized by groups Tool sets organized by functionality Menu driven interface with interactive help ORNL DAAC WebGIS: A web based GIS system for visualizing and distributing biogeochemical and ecological data sets. 1 Suresh K. Santhana Vannan, Robert B. Cook, Tammy W. Beaty, Bruce E. Wilson Environmental Sciences Division, Oak Ridge National Laboratory 2, Oak Ridge, Tennessee NASA Carbon Cycle and Ecosystems Joint Science Workshop, Adelphi, Maryland, April 28 – May 2, 2008 WebGIS Architecture ORNL DAAC WebGIS User ESRIArcIMS Minnesota Map server Custom Data Files ESRI ArcSDE Spatial Database Engine (SDE) Microsoft SQL Server External map layers (from OGC WMS servers) 1 This study was supported by the NASA’s Earth Observing System Data and Information System. 2 Managed by the University of Tennessee-Battelle LLC under contract DE-AC05-00OR22725 with the U.S. Department of Energy Data downloaded for user in their GIS application.